DIN 988

Shim rings

Material: Steel | Installation method: Assembly by hand | Surface: zinc-plated, thick-film passivated (VZD) | Product group: Washers
Shim rings
Diameter (d)
8
15
16
18
20
25
26
28
35
37
40
85
90
Diameter (d2)
14
21
22
25
28
36
37
40
45
47
50
60
105
110
h max.
0,3
0,5
1
2
Packingunit (pcs.)
50
100
200
250
500
1000
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DIN 988 | steel | zinc-plated, thick-film passivated (VZD) | Cr(VI) - free
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Surface (VZD): galvanized, thick-film passivated, min. 5µm | corrosion resistance to DIN EN ISO 9227 *: white rust 72h, red rust 144h | defined coefficient of friction µ(total) = 0.12 - 0.18 for high-strength screws (= 8.8)

>*The verification of the mentioned minimum requirements is carried out according to the test conditions of ISO/CD 4042:2016, galvanic coatings for fasteners. For dimensions < M5, the above values may deviate downwards.
Cr(VI) Note:
Cr(VI)-free
Form:
Round
Risk hydrogen embrittlement:
Material:
Steel
Installation method:
Assembly by hand
Surface:
zinc-plated, thick-film passivated (VZD)
Product group:
Washers
RoHS conformal:
Material:
Steel
The Manual of fastening Technology: 8th edition
PDF
ENG
8100/23-V1-EN (WBH)
Fastening and assembly technology: Products and services
PDF
ENG
1180/21-V1-EN (WBH)
VZD – the Cr(VI)-free alternative: Sustainable surface protection from Böllhoff
PDF
ENG
8045/17.02
Böllhoff bulletin: Changeover to Cr6+-free protective zinc layers for fasteners
PDF
ENG
1622/15.02
Data sheet: Technical information and dimensions of the product
PDF
ENG
02/2023